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I had considered transitioning between different models of varying opacity -- as you say, "page flipping" -- but was concerned that the number of models needed to support a seemingly continuous transition (@ 20+ Hz or so) would be prohibitively large. Varying the radius at runtime is an op...

Folks,

Newbie question: is it possible to [dynamically] change the transparency/opacity of an ssc/dsc model so that it might fade in or out of a scene?

Thanks.

Thanks, Selden. Works fine. The Graticules code is a great example to build from.

I'm a newbie to Celestia, trying to draw successively large cubes around objects to explain order-of-magnitude (logarithmic) distance scales. As referenced in the Celestia/SSC File Guide, "Objects defined in SSC files cannot be seen when the viewpoint is more than 1 light-year from their Star o...